The U.S. government has lied to itself, and to its citizens, about the nature and actions of successive Pakistani governments. Pakistani behavior over the past 20 years has rendered the State Department’s list of state sponsors of terrorism effectively meaningless.

When a CIA operation in Pakistan went bad, leaving three men dead, the episode offered a rare glimpse inside a shadowy world of espionage. It also jeopardized America’s most critical outpost in the war against terrorism.